Cut-out



AU8 1.3, 1935. R. s. BENNETT 2,011,391

CUT-OUT Filed May l2, 1928 2 Sheets-Sheet 2 Inventor: Ralph 5. Bennett,

His Atbor'heg.

Patented Aug. 13, 1935 `UNITED STATES CUT-OUT Ralph S. Bennett,Pittsfield, Mass., assignor to General Electric Company, a corporationoi.'

New York `Application May 12, 1928, Serial No. 277,276

25 Claims. (Cl. A200-133) My invention relates to cutouts. Moreparticularly it relates to cutouts of the type especially adapted foruse as so-called primary cutouts in connection with lines carrying highvoltages, such as* 2500, 5000, 15,000 and the like, and adapted to carryheavy currents such as 60 amperes, 150 amperes, and the like.

Among the objects of my invention are the following: To provide a cutoutfuse fre'e from exposed metal parts; to provide a cutout fuse with anon-metallic hinge for the door of an adjustable type; to provide animproved form of latch for the door; and to provide a new form ofconstruction for the clip elements that engage the fuse terminals. Theinvention will be more fully understood from. the followingspecification and claims, reference being had to the accompanyingdrawings, in which:

Fig. 1 is a more or less diagrammatic illustration of one form of cutoutof the invention. This form of device is ,adapted for use in connectionwith lines of high" voltage and in connection with currents of largevolume.

Fig. 2 is a modied form of the cutout of Fig. 1.

Fig. 3 is a drawing similar to Fig. 1 of a form of cutout of theinvention adapted for use in connection with lower voltages and inconnec- `tion with large volumes of current.

Fig. 4 is a diagrammatic illustration oi' another form o'f cutout of theinvention adapted for'use in connection with lower voltage and inconnection with currents of comparatively small volume.

Fig. 5 is lan enlarged side view in elevation and in section-of the formof device of Fig. 1.

Fig. 6 is a front View of the device of Fig. 5 with part of the doorbroken away to more clearly show the details inside the box.

Fig. 7 is an end view of the cutout of Fig. 6.

Fig. 8 is a section of the cutout taken on line 8-8, Fig. 6. y

Fig. 9 is a perspective view of one of the spring terminal elements ofthel cutout of Figs. 5, 6 and 8.

Fig. 10 is a perspective view of a spring support for the fuse containerof the cutouts of Figs. 5 and 15.

Figs. v11, 12 and 13 are details of the hinge of the'device of theinvention. This type of hinge o adapted for use in connection with allof the forms of the device. Fig. 14 is a side view of one of thesupporting elements for the form of device shown in Figs.

Fig. 15 is a side view in section and in elevation of the form of deviceof Fig. 4.

(Fig. 16 is a front view of the device of Fig. 15 with part of the doorbroken away in order tp show the details inside the box.

Fig. 17 is a section of the device of Fig. 16y

along line I1,-I1.

Fig. 18 is an enlarged perspective view of the supporting device of thecutout of Fig. 4.

Fig. 19 is a view in elevation of a fuse container of the invention.

Fig. 20 is a view in perspective of one of the spring terminal elementsof the device of Fig. 15 corresponding to the spring shown in Fig. 9.

Fig. 21 is a sectional view of the fuse container of Fig. 19.

Fig. 22 is an enlarged so-called exploded view of a section through theterminal 14 and the tube 16, Fig. 21.

Fig. 23 shows a support for the device of the invention which support isa modified form of that shown in Fig. 1.

Referring more in detail to the drawings and more particularly to thetype of cutout Yshown in Fig. 5, it will be seen that it comprises a7container 2 of insulating material such as porcelain. Inasmuch as thistype of cutout is intended for use in connection with high voltages, thecontainer is provided with rearwardly projectling insulators 3 and 4which are formed as parts of the container. Each of these insulators isprovided with a threaded core, such as the cores 5 and 6, Fig. 5, of theinsulators 8 and 4 respectively. Each of these cores is adapted toreceive a threaded pin, such as the pins 1 and 8. These pins may be madeof metal. The heads of the pins 1 and 8 as shown in Fig. 14 are providedwith a. thread in the form of a helical wire coil I0. At one end, thepin is provided with a pair of notches I I and I2 adapted to receive theends I3 and I4 of the coil I0 which are bent so as vto enter the notchesII and .I2 and be seated therein, thereby locking the spring I8 inposition. I prefer to use pins 1 and I of this type inasmuch as thethreads are flexible.

lI1 pass, the elements I9 and 20 'being provided ,rivet elements 4|).

with suitable holes for receiving the stems of the elements I6 and |1.These stems, as indicated, are threaded for receiving nuts 23 and 24. Itwill be seen that the heads of the elements 6 and I1 terminate inshoulders 25 and 26. Therefore, by tightening the nuts 23 and 24 thelinks I9 and 20 are tightly clamped about the cross arm element I5, thuseffectively support ing the container.

The container, as shown in Figs. 5 and 6, is provided with a coverelement 21 which is also formed of insulating material. This cover isprovided with a novel hinge element which passes through the tailprojection 28, Fig. 6, which projection is an extensionof said cover.The details of this hinge are shown in Figs. 11, 12 and 13. The hingecomprises a shaft element 29 which extends all the way through a channel29a in the projection 28. The container 2 is provided with a pair offlanges 30 and 3| through which holes extend for receiving the shaft 29.

These holesserve as bearings for the shaft 29.

The channel 29a between the flanges 3|! and 3| is preferablyrectangular. A pair of rectangular spacers or strips 32 and 33 areprovided for use in connection with the shaft 29 by means of which theadjustment of the hinge may be carried out (see Figs. 5 and 6). In Fig.5 the shaft 29 is located between the spacers 32 'and 33. A pin 34 isprovided which extends through the shaft 29 and the spacers 32 and 33,as indicated in dotted lines in Fig. 6. With this arrangement the shaft29 is centrally located in the channel 29a.

washers 35 and 36 in order to keep the cover centrally located betweenthe flanges 30 and 3|. The holes through the washers 35 and 36 are justlarge enough to permit the shaft 29 to pass through. These holes,therefore, are smaller than the channel 29a and therefore prevent theassembled structure consisting of the shaft 29 and the spacers 32 and 33from sliding lengthwise. Furthermore, the holes in the flanges 30 and 3|are barely larger than the shaft 29. Therefore, the flanges 30 and 3|also assist in preventing any lateral displacement of the shaft 29 whichas above indicated is pinned to the spacers 32,and 33. It will beunderstood that the pin 34 may be locked in position in any suitablemanner. For example, the pin 34 may be in the form of a small bolt witha head on one end and a nut on the other or it may even be in the form`of a cotter pin. In the manufacture of the container 2 it is verydifcult to always make this element exactly the same in size.Consequently, it is very desirable that the hinge should be adjustable.This adjustable feature is obtained by the provision of the spacers 32and 33, both of which may be located on the upper side of the shaft 29,as indicated in Fig. l1,

or they may both be located on the undersideof the shaft 29, asindicated in Fig. 12. The result is that the cover 21, may, iflnecessary, be raised a little as shown in Fig. 11, or it may be lowereda little as shown in Fig. 12.

As indicated in Fig. 5, the container 2 is provided with a pair ofterminal spring elements A and B each similar to that shown in Fig. 8 orin Fig. 9. As shown in Fig. 9, each of these terminals consists of threemetal elements 31, 38 and 39, all riveted together by means of the Theelement 31 serves as a spring latch, the ends of which engage abutmentsformed by recesses 4I in the walls of the connection may readily bemade.

Between the projection 28 and N the flanges 30 and 3|, I provide one ormore tainer 2. The container `is provided on each side with a pair ofheel projections, one pair 42, Fig. 6, being shown on one side, andanother pair 43 being shown on the opposite side. These heels serve asbarriers to prevent the terminals A and B from being displaced fromtheir latched position n the container 2. These heels, of course, are apart of the container 2. The container is further provided with barrierelements 44, 45 and 46, the object of which will be more fullydisclosed. These barriers have a function to perform in connection withthe operation of the device at the time that the fuse explodes.

It will be seen that the terminal in Fig. 9 is also provided with theextension 41 from the metal element 39. This extension 41 is providedwith the binding screw 48 to which a circuit con- For example, aconductor lead to the device is preferably supplied with a terminalelement 49 which may be secured to the binding screw 48, as indicated inFig. 9. Referring to Fig. 5, it will'be seen that inasmuch as there aretwo terminal elements A and B each similar to that shown in Fig. 9,namely, a lower one and an upper one, there are provided, of course, twoterminal screws, namely, the screw 48 for the lower terminal A and thescrew 48 for the upper terminal B, both being the same. As shown in Fig.`5 terminal B has a terminal 49a similar to the terminal 49, Fig. 9.This terminal is more clearly shown in Fig. 6.

On the cover of the device, Figs. 5, 6 and 8 the fuse element y58 ismounted. This fuse element is provided with two terminals, an upperterminal 5| and a lower terminal 52. The fuse wire 1s within the tube ofthe fuse element 5|), being located between the two terminals. At thelower end, the fuse wire'makes a loop and extends around the lower end53 and i then extends on the outside of the fuse element 50 up as far asthe clamping screw 54, which insures connection between the fuse wireand the terminal 52. For securing the lower end of the fuse element 59in position I provide on' the cover a clip spring (see Fig. 5) which issecured to the cover by any suitable means such as by means of the screw56. In order to prevent static or other sparks between the fuse terminal52 and the clip 55, an auxiliary spring 51 is secured under the head ofthe screw 56. This spring effectively engages the surface of theterminal element 52 next to the cover 21, as shown in Fig, 5. The upperend of the fuse is secured to the cover by means of 'an S shaped metalsupport 58. Support 58 is clearly shown in perspective in Fig. 10. As

`indicated in Fig. 5, support 58 is secured to the cover by means ofscrews 59. The upper terminal 5| of the fuse is provided with a metalcap 60 which is a part of the terminal 5|. This metal cap, as shown inFig. 5, is inserted in the opening 6|, see Fig. 10. The upper end of thecap 69 is forced home until it strikes the shelf 82 thereby insuring theproper location of the fuse element. Support 58 is provided with a heel63, Figs. 5 and l0, which serves as a`fulc1'um for the fuse element 50and uponwhich the fuse element 50 rests, as shown in Fig. 5. When thecap 60 is inserted in position in the support 58 the lower end of thefuse element is pressed down even after it strikes the heel 63 until itis forced into engagement with the clip spring 55. This, of course, willdeflect the support 58 somewhat, maintaining good contact between 58 and60 and so preventing sparking. It will be seen, therefore, that meansare provided on the cover 21 for effectively securing the fuse inpermanent position on the cover. The cover is furthermore provided witha spring element 84, (see Fig. 8), which element is secured to the coverunderneath the metal support 58 and clamped by means of the screws 58.'I'his element 84 forms part of a latch mechanism, the other portion ofwhich is the element 31 (see Fig. 9). When the cover 21 is closed theedges a of the spring 64 engage the edges 31a of the element 31 (seeFig. 9) and snap underneath the shelf 55 of the element 31 therebylatching the cover in position. When the cover is closed the terminalslland 52. of the fuse are forced into effective electrical contact withthe spring elements 38, (see Fig. 8) of the terminal clips A and B. Thecover is also provided with barrier elements 58 and 61 located oppositethe barrier elements 45 and M. As shown in Fig. 5, the cover is providedwith a ring element 88 which serves as a` handle for the purpose ofopening and closing the cover'. This element is provided with a hole 88in order that 'the cover may be effectively gripped in order to pull itopen against the tension of springs 31 and 5l. This ring is madeintegral with and made of the insulation material of the cover.

While any suitable insulating material may be used for the container,nevertheless I have found that for the base 2 porcelain made by the wetprocess is preferable. However, it is preferable to make the cover ofmolded insulation, such as a phenolic condensation product.

With the foregoing construction the terminal elements A and B areeffectively but yieldingly secured to the container 2, so that a properalignment may be made with respect to the terminals 5I and 52 of thefuse. For example, these terminals A and B, while they are held in placeby the notches 4I in the sides of the casing and by the projecting heelsl2, still there is a slight play both longitudinally of the casing andabout an axis at right angles to the axis of the container andperpendicular to the cover. It will also be seen that the latch elements31 and 54 are independent of the contact elements 39 so that themovement of the latch elements B4 and 31 transverse the axis of thendevice during the latching operation does not affect the contact betweenthe fuse terminals 5i and 52 and the contact springs 39.

The type of device shown in Fig. l5 is provided with terminal elementssomewhat similar to terminal elements A and B but slightly modied inform as shown in Fig. 20. In this type of terminal there are providedonly two spring elements and1l.` However, the spring element 10 isprovided with two different sets of prongs, namely, the prongs 12 andthe prongs 13. The prongs 12 serve as the latching members for engagingthe notches 12a in the side of the container as shown in Fig. 1'1corresponding to the notches 4| Fig. 8. The prongs 13, on the otherhand, serve as latching elements corresponding to the latching elements31a in Fig. 9. The element 1|, on the other hand, serves as anindependent contact member for making contact with the terminals 1l and15 of the fuse element 16, Fig. 19 of the smaller device.

In the type of terminal shown in Fig. 20 the cable connection is madewith a binding post 18 and mwhich is directly secured to the element 1|or which may be formed from said element. In Fig. 17 I haye indicatedthe relation of the fuse terminal with respect to the latching springs13. While the type of device of Fig. 5 is designed to be secured uprightto a cross arm, such as the cross arm I5, by clamping to the cross arm,the type of device shown in Figs. 4 and 15 is preferably secured in aslanting position by means of a support'in the form oi a metal stirrup18 shown in Fig. 18. The object of thus slanting the device is tominimize the danger of rain and snow entering the device. The stirrup isprovided with holes 88 by means of which the stirrup is bolted to thedevice as shown in Fig. 4. At the rear end the stirrup is provided withmetal spurs 8l designed to be embedded in the wood of the supportingstructure and a bolt 82 is used for clamping the stirrup to the supportas indicated in Fig. 4. Furthermore, the device is provided withopenings 83 on the side through which the cable leads enter the device,which leads, ofcourse, are secured to the terminals 11 and 11', Fig. 15.Similarly, in the form of device shown in Figs. 2 and 5 the casing 2 isprovided with openings 84 on the side through which the cable terminalsenter and join the terminals A and B.

It will be seen, therefore, that the cutout of the invention presentsthe novel features of being free from any exposed metal parts which maybe in any way connected with the live elements within the device andfrom isolated metal parts which would acquire a static charge. It willalso be .':een that I provide a form of hinge which is free from metalelements and which is adjustable and which, therefore, reduces the costof construction. The device comprises new forms of terminal elements,such as the elements of Figs. 9 and 20, which may be readily inserted orlatched in position without necessitating the use of screws, babbitt,cement, or ,the like. 'I'hese terminals A and B possess the featuresthat they are formed each as a unit, each can be easily and effectivelylatched in position, and yieldably held so as to enable each to becomeproperly aligned with the fuse terminal and thereby insure goodelectrical connection with the fuse element notwithstanding variationswhich necessarily result in the manufacture of ceramic materials.Furthermore, all of the metal elements of the device are electricallyconnected within the container, as for example, by the provision of theelements, such as the element 51, Fig. 5, thereby making it impossibleto have any sparking between elements of the device which may producewaves that will interfere with radio communication. The device isprovided with suitable projections in the rear of the containerresembling line insulators and which are integral therewith, effectivelyinsulating the device from the supporting pins and minimizing the costin manufacture. The device also provides novel methods of insuringpermanent and reliable connection between the terminals of the fuseelement and the terminals of the device.

Referring to the fuse element, Fig. 21, it will be seen that theterminal 15 is provided with threads 85 and with a cap 86 which isadapted to fit over the projection 81 and screwed thereon in order toclamp the cap 88 of the fuse wire 88 between the upper end of theprojection 81 and the cap 86, which latter is closed atthe top.

The terminal 14 of the fuse element is provided with an extension 90which is provided with threads 8l. A nut 92 is adapted to be screwed onthe extension 90. The lower portion of the extension 90 is tapered andserves to clamp the lower end of the fuse wire 89 between the nut 82 andthe lower portion of the extension 90. As will be seen from Fig. 22 theextension 80 is lanced transverselyalong the lines 83 and 8l and themetal pressed inward so as to form a locking element 95, which engagesthe notch 96 in -the insulation tube -91 that supports the terminals 'l5and 14. The object of the notch 96 and of the locking element is to holdthe terminal 'I4 yieldngly in one denite position but allowingsuilicient play to permit the terminal 14 to line up with the elementsin the container.

The object of the barriers in the container, such as the barriers 44, 45and 45 is to impede the gases when the fuse wire blows from rising upinto the container and depositing metal or metal oxides on the walls ofthe container, which, of course, is objectionable. Furthermore, thebarriers impede the passage of the gases when they are in anincandescent and conducting state 'and are liable to short circuit theinsulation in the cutout.

With reference to the cutouts shown in Figs. 1 and 3, it will be seenthat these cutouts dier from the cutout of Fig. 2 in that the coverinstead of being narrower than the container, as indicated in Fig. 17,is as broad as the container and covers the edges of the side Walls ofthe container.

It will be understood that the opening formed between the cover 21 andthe barrier 46, (see the lower part of Fig. 5), that is, between thebarrier 46 on one side and the iiange 99 on the opposite side having theprojections C and D (see Fig. 7), between which the lower end 53- of thefuse element projects, ares upwardly and the barrier 46 and flange 99operate as a barrier and assist the barriers 44 and 45 in preventing thegases from accumulating within the container. The tail projection 28 atthe lower end of the cover not only serves to receive the shaft 29, butit also serves as an apron' and protects the operators who handle thedevice from coming in contact with the metal fuse wire |00. This fusewire, as shown in Figs. 5 and 7, is folded around the lower end 53 ofthe tube or cartridge of the fuse element 50. The form of the opening,as clearly indicated in Figs. l5 and 7, insures a free, smooth.

exit of the gases at the time that the fuse blows. With respect to theelement shown in Fig. i0; while I have shown this element 'as beingprovided with Aa stop shelf S2, this shelf may in certain instances bedispensed with.

It will be understood that while l have elected to disclose my inventionby specific 'illustrations such as contained in the drawings, I do notcarer` to be limited to the specific structure disclosed,

.inasmuch as in view ofthe specification, variations and modificationsmay be readily made Without departing from the spirit of the inventionor the scope of the claims contained le'rein.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is:-

y1. A cutout. having a container of insulating -materiaL a pair ofterminals for the cutout located in the container each provided withmeans for receiving aterminal of a fuse, and a fuse mounted between said4cutout terminals, a door for the container, one of said cutoutterminals being provided with spring means movable independently of thefuse receiving means for latching the door of the container to hold thedoor closed.

2. In an electric device, a fuse, a terminal for theA fuse, a supportfor the terminal, said support being in general S-shaped and having anopening along the axis of the S in the central slanting section of the Sthrough which a fuse terminal projects, the top branch of the S'serving-asa lower section of the S serving as a'seat for the fuse.

3. A cutout having a container of insulating material, a pair of cutoutterminals located in the container each provided with means forrecontainer, and means for adjusting the hinge.

with respect to the door whereby the door may be adjusted with respectto the container.

4.u A cutout having a container ofinsulating material, a cutout terminalin the container provided with means for receiving a terminal of a fuse,a door for the container, means for latching the door to said cutoutterminal, the latter being provided with spring means for latching thecutout terminal to the container wall.

5. A cutout having a container of insulating material, said materialforming two projections on one side of the container, each projectionhaving a hollow threaded core, and means for supporting said containercomprising a pair of pins each provided with exible threads for engagingthe thread elements in said projections.

6. A cutout having a container'of insulating material, a cutout terminalin the container provided with means for receiving a fuse terminal, adoor for the container, said cutout terminal being provided with meansfor latching the latter to the wall of the container, a catch elementsecured to the door, and a spring element for the cutout -terminal forlatching the catch and the spring element together to hold the doorclosed.

7. A cutout having a container of insulating material, a spring cutoutterminal in the container provided with means for receiving a fuseterminal, a door for the container, said cutout terminal being providedwith means for latching the cutout terminal to the container wall, acatch element secured to the door, a latch spring for the cutoutterminal, means for latching the latter to both the container and thecatch to hold the door closed, said latch spring being provided alsowith means for reinforcing said cutout terminal.

il; A cutout having a container of insulating material, a pair of cutoutterminals in the container each provided with means for receiving theterminals of a fuse and a fusel'mounted between said cutout terminals, adoor for the container,

said door being provided with a non-metallic` hinge to render the hingeregion safe against exposed metal parts, said hinge being supported bysaid container, said hinge consisting of a. shaft element and a spacerassociated with said shalt whereby the door may be adjusted with respectto the container.

9. A 'cutout having a container oi' insulating material, a pair ofcutout terminals in the container each provided with means for receivingthe terminal of a fuse and a fuse mounted between said cutout terminals,a door for the container, said door being provided with a non-metallichinge, said hinge being supported by saidL container, and means foradjusting the hinge with respect to the door whereby the door may beadjusted with respect to the container, said means .comprising a shaftserving as the hinge and shaft whereby the spacers will clear thecontainer between the points of support of the shaft.

10. A cutout having a container of insulating material, a pair ofterminals for the cutout located in the container each provided withmeans for receiving a terminal of a fuse, and a fuse mounted betweensaid cutout terminals, a door for the container, one of said cutoutterminals being provided with spring means movable independently of thefuse receiving means for latching the door of the container to hold thedoor closed, the spring means and the fuse receiving .means being formedas a unit with all the elements thereof in metallic contact.

1l. A cutout having a container of insulating material, a pair ofterminals for the cutout located in the container each provided withmeans for receiving a terminal of a fuse, and a fuse mounted betweensaid cutout terminals, a door for the container, one of said cutoutterminals being provided with spring means for latching the door of thecontainer to hold the door closed, said fuse being'permanently securedto the door in such manner that the terminals thereof engage the cutoutterminals when the door is closed, and means for yieldingly holding thecutout terminals in position with respect to the container whereby thecutout terminals may become properly aligned with respect to the fuseterminals when the door is closed. v

12. A cutout comprising a container of insulating material, a coverhinged to the container, spaced clips on the cover for supporting a fuseelement, spaced terminals in the container each comprising a springlatch which engages walls of the container for yieldingly positioningthe terminal in the container and spring ilngers for engaging a terminalof a fuse element, and cooperating members carried by the container andcover which form a spring latch for fastening the cover in closedposition.-

13. A cutout comprising a container of insulating material, a coverhinged to the container, spaced clips on the cover for supporting a fuseelement, spaced terminals in'the container each comprising a springlatch which engages walls of the container for yieldingly positioningthe terminal in the container and spring ngers for engaging a terminalof a fuse element, and cooperating members carried by the container andcover which form a spring latch for fastening the cover in closedposition, the member carried by the container being a part of one of thespaced terminals.

14. -A cutout comprising a container of insulating material, a coverhinged to the container, spaced clips on the cover for supporting a fuseelement, spaced terminals in the container each comprising a springlatch which engages walls of the container for yieldingly positioningthe terminal in the container and spring fingers for engaging a terminalof a fuse element, cooperating members carried by the container andcover which form a spring latch for fastening the cover in closedposition; and means for electrically connecting the clips on the coverto the spaced terminals when the cover is closed.

15. A cutout comprising a container of insulating material and a coverhaving spaced clips for supporting a fuse element, one of said clipscomlprising an angularly extending wall having an opening to receive theend of a fuse element and a projecting wall beneath the angularlyextending wall which forms a fulcrumfor engaging the fuse element andwedging its end against the edge of said opening.

16. A cutout comprising a container of insulating material and a coverhaving spaced clips for supporting a fuse element, one of said clipscomprising an angularly extending wall having an opening to receive theend of a fuse element, a projecting wall beneath the angularly extendingwall which forms a fulcrum for engaging the fuse element and wedging itsend against the edge of said opening, and a wall above the angularlyextending wall which forms a stop for positioning the fuse element inthe clip.

17. In a fuse cutout, a casing having a back wall and side walls, saidside walls being provided with abutments, and a spring terminal in thecasing comprising spring arms, the outer ends of which engage saidabutments to hold the terminal in position, and spring members locatedbetween said spring arms for engagement with a fuse terminal.

18. In a fuse cutout, a casing having a back wall and side walls, saidside walls being provided with abutments, and a spring terminal in thecasing comprising a U-shaped member having spring arms the ends of whichengage said abutments to hold the terminal in place, and spaced springmembers projecting upwardly between and in spaced relation to saidspring arms for engagement with a fuse terminal.

19. In a fuse cutout, a casing having a back wall and side walls, saidside walls being provided with abutments, and a spring terminal in thecasing comprising a base portion, means for connecting a conductor tosaid base portion, spring arms projecting upwardly from said baseportion and engaging said abutments to hold the terminal in place, andspring members projecting upwardly from said base'portion for engagementwith a fuse terminal.

20. In a fuse cutout, a casing having a back wall and side walls, saidside walls having abutments, and a spring terminal in the casingcomprising a plurality of nested U-shaped members having their baseportions fastened together, the arms of one of said U-shaped membersengaging said abutments, and the arms of another of said U-shapedmembers being adapted for engagement with a fuse terminal.

21. A spring terminal for a fuse box comprising a plurality of nestedU-shaped members having their base portions fastened together, and theirarms projecting in spaced relation to each other, certain of said armsbeing adapted for holding the terminal in a fuse box and other of saidarms being adapted for engagement with a fuse terminal. y

22. A spring terminal for a fuse box comprising a plurality of nestedU-shaped members having their base portions fastened together, and theirarms projecting in spaced relation to each other, certain oi said armsbeing adapted for holding the terminal in a fuse box and other of saidarms being adapted for engagement with a fuse terminal, a base portionbeing provided with means whereby a conductor may be connected thereto.

23. In a fuse cutout, a casing having a back wall and side walls, and aspring Iterminal in the casing comprising a base portion, means attachedto the base portion and engaging the casing for holding the base portionin the casing, the connection between said means and the casingpermitting adjustment movement of the base portion, and spring armscarried by the base portion and extending forwardly along the side wallsfor engagement with a fuse terminal.

24. In a fuse cutout, a casing having a back wall -and side walls, and aself aligning spring terminal therein comprising a. Urshaped structurehaving spring arms'which engage walls of the casing for holding theterminal in position and which extend along the side walls of the casingto receive between them a fuse terminal, and means :for attaching aconductor to the tin shaped structure.

25. ln a fuse cutout, a casing having a baci;

wall, side walls, and an open front, a cover for the open front adaptedto carny a fuse, and a spring terminal in the casing comprising twospaced spring arms adapted to receive between them a f use terminal on afuse carried by the cover, and means for yieldingly mounting the springterminal in the casing whereby it may move to' align itself with such afuse terminal.

